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本帖最后由 yyj 于 2018-1-30 11:01 编辑 # u2 |* w1 n, R) W+ z
- [code]EDMA sample test application/ C* z( v1 B: a! q, Y
- /*' Y. d; p2 g8 o. c, n! s2 k
- * edma_test.c0 u2 q' ?9 s U9 } P
- * Y0 z5 ]+ v3 |
- * brief EDMA3 Test Application
3 p5 ]7 D1 i8 @8 s/ ~# z# _ - *
7 A4 z6 K' J7 k$ V - * This file contains EDMA3 Test code.! S1 O. J/ U5 N+ K/ `+ \7 u* J6 U
- *0 }) Y( A1 |% C
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE( |3 T, T6 [) ]8 p- D: F1 m
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 h8 d5 x. D; |, h% I
- * TO CHANGE.) I7 V1 o! f' _ |. n
- *# H5 `/ @7 f7 [% Z- |* I. j8 K$ Q
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/9 P: d, }9 Q1 H/ V% B. [
- *
" w: n6 x4 F: s7 z - * This program is free software; you can redistribute it and/or
' O* I% Z" D: [0 E/ J5 A9 h; e - * modify it under the terms of the GNU General Public License as
: h0 V' L; B0 _* D( u - * published by the Free Software Foundation version 2.
8 y$ ]& m3 }/ x7 b6 x( L - *
& c* z$ V9 |5 h9 I" B1 O+ \+ M - * This program is distributed "as is" WITHOUT ANY WARRANTY of any9 G" {6 ?& P) e! N: E
- * kind, whether express or implied; without even the implied warranty/ M7 u) I+ ~/ I, W# [8 L1 W8 n
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 N: q) n( w, R+ @; u9 |
- * GNU General Public License for more details.4 I m# E3 C5 ?0 ]
- */
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0 P& a9 v6 ^" R( c- l/ W( g- #include <linux/module.h>
( E" M8 M4 z+ w' w( k) G - #include <linux/init.h>
% ` J9 @* I9 r8 T. {" D% X6 u - #include <linux/errno.h>" R. t% d2 R/ M' l. j
- #include <linux/types.h>) r5 \# d! r' c( L+ ]
- #include <linux/interrupt.h>
" G; y; w# T+ u7 T+ L& n - #include <asm/io.h>1 S0 L8 g$ ?. i: F1 S- |) u) T% G
- #include <linux/moduleparam.h>. J# l5 k- w* i6 K' s+ y2 c
- #include <linux/sysctl.h>
# H. i5 ?1 _- p6 Z - #include <linux/mm.h>5 ^3 A( q- a: f$ R; }
- #include <linux/dma-mapping.h>; X' f1 y: t* j% @
- $ `9 i G: h$ Y; \. z5 V+ g
- #include <mach/memory.h>$ [/ P' x1 d% y0 B7 B# p
- #include <mach/hardware.h>, C5 {1 V( r( f3 e2 V$ ]1 s
- #include <mach/irqs.h># Y: W$ r2 B2 a. m
- #include <asm/hardware/edma.h>: g& N) V0 v) I8 V
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- #undef EDMA3_DEBUG/ j; J- x: {6 O
- /*#define EDMA3_DEBUG*/
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/ J% @. @4 w6 v. x- #ifdef EDMA3_DEBUG$ C5 w# g2 u. ]4 k3 s+ x6 {! k; c
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ Q* R* p, E# j+ y: f* S7 ~
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)$ Z* n2 m% |6 C) @5 m: A" H% w
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)( i/ k7 Y# g8 Y$ E4 @% P8 P
- #else
+ {9 S3 \& n$ I - #define DMA_PRINTK( x... )
# T- I( z: o9 m" r% i - #define DMA_FN_IN
; w) Y$ P2 v- j9 o' D - #define DMA_FN_OUT' H& `/ ?( U- {: I6 }, V
- #endif5 I7 l3 W5 A7 |+ T& V' n
- 5 W! {1 w8 G8 ]# O- F) z
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)5 o8 \; J, B0 I1 a
- #define STATIC_SHIFT 3% u# n! o/ x6 C. a$ A$ M1 {( D3 y
- #define TCINTEN_SHIFT 20* _2 q0 m T5 z2 Z& ?( O& B
- #define ITCINTEN_SHIFT 21' s+ ~3 P5 r+ G8 } v- w
- #define TCCHEN_SHIFT 22
; m/ V6 [' B9 W1 o- q - #define ITCCHEN_SHIFT 23
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7 {3 a3 F6 ^9 d% u( E- static volatile int irqraised1 = 0;
7 r) V8 Z4 u. p0 M- `1 J4 a - static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
\. M( d6 G8 o - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
/ ?. c3 ~' X) g: Q" y$ Q - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 ?% i5 R9 m/ e4 k
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- dma_addr_t dmaphyssrc1 = 0;! L' O9 }0 p. \/ Q# y* o% g7 [
- dma_addr_t dmaphyssrc2 = 0;
( L; z6 V1 ]2 o1 c9 Q - dma_addr_t dmaphysdest1 = 0;
5 Z# t( D, }5 w- K - dma_addr_t dmaphysdest2 = 0;
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6 ]$ j9 Z0 I* K/ k9 E$ u7 Z+ f: {2 [- char *dmabufsrc1 = NULL;& f. Z" |, m6 \$ W
- char *dmabufsrc2 = NULL;
5 K; S7 b& Z3 }" O/ q, n - char *dmabufdest1 = NULL;
# | }( J( c9 D5 H: X# L - char *dmabufdest2 = NULL;1 f" U' L, K- V* v$ q- E7 n
- s5 L5 F) _# s2 D& \/ x
- static int acnt = 512;5 k5 R- U6 F, v# F
- static int bcnt = 8;
9 x3 r6 f" m% R, Y$ g% M* a; L - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
3 x. f* J( a, X) M - module_param(bcnt, int, S_IRUGO);/ B0 e2 G/ o* b* `. X. Q- B
- module_param(ccnt, int, S_IRUGO);
复制代码
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这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用
" U$ W* X' Z7 J& F; Aarm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。
3 t# L. y1 p, k3 k3 z 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。% M ], f, `0 j
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